Westminster Pet Products-American Beefhide Flat Knot Bone. Westminster Pets has taken first quality beefhide from American raised cattle to create this line of American Beefhide bones and chews. American Beefhide offers a durable, long lasting, chew that also helps maintain canine dental health. This package contains one American beefhide flat knot bone between 10 inches and 11 inches long. Made in USA.